Samsung Galaxy A16 5G A166USQS2BYF3
SM-A166U 4 countries Android 15

Samsung Galaxy A16 5G A166USQS2BYF3 Firmware

Samsung Galaxy A16 5G A166USQS2BYF3 is an Android 15 firmware for 4 countries, 10 CSC codes. It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build A166USQU2BYED: security patch 2025-06-01 instead of 2025-05-01. A newer build for SM-A166U is available: A166USQSADZI2.

OS updates guaranteed until: Android 22Security updates until: Oct 24, 2032
9.0/10 (264)16,597 times
Android 15
OS Version
2025-06-26
First release
other regions until 2025-07-07
2025-06-01
Security patch
4
Countries
10
CSC codes
2
Bootloader binary

Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

Newer builds of Samsung Galaxy A16 5G use bootloader binary A (10) (latest: A166USQSADZI2). If your device already runs binary A (10), this build cannot be flashed.

All regional downloads

Pick your region (CSC) to download the matching firmware package.

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.
    10
    MODEM/CP Version: A166USQS2BYF3
    ModelRegionCSC VersionBuild DateRelease dateSizeFile nameDownload
    SM-A166U
    AIO United States
    		A166UOYN2BYF3 2025-07-01 2025-07-01 6.242 GiB
    SM-A166U_2_20250619184121_3mone3frhd_fac.zip
    SM-A166U
    APP
    		A166UOYN2BYF3 2025-07-01 2025-07-01 6.24 GiB
    SM-A166U_2_20250619182430_a3iyq8xjp1_fac.zip
    SM-A166U
    ATT United States
    		A166UOYN2BYF3 2025-07-01 2025-07-01 6.24 GiB
    SM-A166U_2_20250619185651_1vnm6i8cbg_fac.zip
    SM-A166U
    CCT United States
    		A166UOYN2BYF3 2025-07-01 2025-07-01 6.457 GiB
    SM-A166U_2_20250619173740_9nml08s8fu_fac.zip
    SM-A166U
    CHA
    		A166UOYN2BYF3 2025-07-01 2025-07-01 6.232 GiB
    SM-A166U_2_20250701191041_d5fl4ntvl3_fac.zip
    SM-A166U
    TMB United States
    		A166UOYN2BYF3 2025-06-27 2025-06-30 6.229 GiB
    SM-A166U_2_20250618150040_x6plmqj4t3_fac.zip
    SM-A166U
    TMK United States
    		A166UOYN2BYF3 2025-06-27 2025-06-30 6.229 GiB
    SM-A166U_2_20250618152740_h6oao9pn2a_fac.zip
    SM-A166U
    USC United States
    		A166UOYN2BYF3 2025-06-26 2025-07-07 6.231 GiB
    SM-A166U_2_20250619180840_haq8t0wddu_fac.zip
    SM-A166U
    VPP
    		A166UOYN2BYF3 2025-07-07 2025-07-10 6.251 GiB
    SM-A166U_2_20250707132741_0k4uyymqjk_fac.zip
    SM-A166U
    VZW United States
    		A166UOYN2BYF3 2025-07-07 2025-07-10 6.305 GiB
    SM-A166U_2_20250619175300_e57ek7vab8_fac.zip

    No matching downloads

    Device specifications

    • Display diagonal17 cm (6.7")
    • Display resolution1080 x 2340 pixels
    • RAM8 GB
    • Rear camera resolution50 MP
    • Rear camera typeTriple camera
    • Battery capacity5000 mAh
    • Weight200 g

    Specifications of SM-A166B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

    What's new in A166USQS2BYF3

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    How to flash A166USQS2BYF3

    • A166USQS2BYF3 has bootloader binary 2. Your device must run binary 2 or lower: it is the 5th character from the end of your current build number.
    • CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
    • HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
    • The Download Mode key combo depends on the model: see all combos.
    Full flashing guide
    Beware: Manually flashing firmwares may brick your device. Use it at your own risk and follow our tutorial steps.

    Frequently Asked Questions

    A166USQS2BYF3 is Android 15 firmware for Samsung Galaxy A16 5G, released for 4 countries, 10 CSC codes. It includes the 2025-06-01 security patch. Samsung built it on 2025-06-26.

    No. A newer build for SM-A166U is available: A166USQSADZI2. Install it instead of A166USQS2BYF3 unless you need this exact version. The previous build was A166USQU2BYED.

    Download the package for your region (CSC) and unzip it. In Odin, load each file into the slot with the same name: BL, AP, CP (if the package has one) and CSC, or HOME_CSC to keep your data. Odin checks the built-in checksum of every .tar.md5 file before flashing. The Samsung Galaxy A16 5G must be on bootloader binary 2 or lower.

    This build uses bootloader binary 2. It can be flashed on a Samsung Galaxy A16 5G running binary 2 or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 4 other builds of this model use the same binary, so you can switch between them in both directions.

    Other builds and changelog for Samsung Galaxy A16 5G

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.5
    Visual design

    Fresh new look
    One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    Show 14 older builds

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 8.0 (Android 16)
    Productivity

    Check stock prices without unlocking
    Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

    Easier file sharing with Quick Share
    It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

    Sticky notes
    Add quick annotations on top o...

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    One UI 7.0 Upgrade (Android 15)
    Bold new look

    Visual enhancements
    Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

    Reimagined Home screen
    Fr...

    • Security

    The device is protected with improved security.

    These changes may vary depending on the model, country, or network operator of the customer environment.

    • Security
    The device is protected with improved security.

    · Device stability improvements, bug fixes.
    · New and / or enhanced features.
    · Further improvements to performance.

    • The security of your device has been improved.

    • Security
    The device is protected with improved security.

    • The security of your device has been improved.

    Model firmware by region